Multi-Component Ammunition Case Assembly for Uniform Thin Walls
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current manufacturing methods for bullet ammunition cases require significant investments, are resource-intensive, and do not allow for uniform wall thickness, making them costly and inefficient, especially when compared to multi-component cases.
Innovation Solution
A method involving the assembly of thin strips or parts using shaping dies and welding to form lighter, thin-walled cases with increased internal volume, reducing the need for complex machinery and chemical treatments by forming the liner, shoulder, and mouthpiece from optimized elements, which can be made from various materials and assembled using processes like electron beam or laser welding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional mechanical deformation methods are used to manufacture bullet ammunition cases, then the manufacturing process is well-established and reliable, but the investment cost is significant, the facility complexity is high, and the wall thickness uniformity is poor
Solution Approach 1:
The case is divided into multiple components (body, shoulder, mouthpiece, cap) that are formed separately from thin strips and then assembled together. This segmentation allows each component to be optimized independently for uniform wall thickness while using simpler forming equipment compared to traditional single-piece mechanical deformation methods.
Solution Approach 2:
The invention uses multi-component construction where different materials can be used for different parts of the case. Each component is formed from thin strips of appropriate material, allowing optimization of material properties for specific functional requirements while achieving uniform wall thickness through the forming process.
2Volume of moving object
If traditional manufacturing methods with multiple stamping and drawing operations are used, then the process is proven and reliable, but the production cost is high and the internal volume is reduced
Solution Approach 1:
By segmenting the case into separate components formed from thin strips, the invention achieves increased internal volume since thin strips require less material removal and deformation compared to traditional methods. The components are then assembled using simple welding or mechanical processes, maintaining ease of manufacture.
Solution Approach 2:
The invention changes the fundamental parameter of wall thickness by using thin strips as the starting material instead of thick stock. This parameter change increases internal volume while the strip forming process on dies maintains manufacturing simplicity through optimized forming operations.
3Quantity of substance
If traditional mechanical deformation of single metal part is used, then the process is established, but the case weight is high and the propellant capacity is limited
Solution Approach 1:
The invention changes the wall thickness parameter by using thin strips instead of thick stock material. This reduction in wall thickness directly decreases case weight while increasing internal volume, thereby increasing propellant capacity. The thin-walled construction maintains structural integrity through optimized forming and assembly processes.
Solution Approach 2:
The multi-component construction allows nested assembly where the body, shoulder, and mouthpiece are assembled together with the cap. This nested structure optimizes the use of material and space, reducing overall case weight while maximizing internal propellant volume.
4Ease of manufacture
If traditional manufacturing facilities with big presses and heat treatment equipment are used, then the production capability is sufficient, but the investment required is significant and the chemical treatments require environmental protection measures
Solution Approach 1:
The invention replaces traditional mechanical deformation processes with strip forming operations on dies. This substitution eliminates the need for big presses and associated heat treatment facilities, significantly reducing investment costs. The forming process occurs at ambient conditions without requiring chemical treatments, thereby eliminating environmental protection requirements.
Solution Approach 2:
The invention extracts and eliminates the need for heat treatment facilities and chemical treatment equipment from the manufacturing process. By using thin strip forming and direct assembly, the process removes the harmful chemical treatment steps entirely, reducing both investment costs and environmental impact.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach simplifies the manufacturing process, reduces costs, and allows for higher production rates while enabling uniform wall thickness and increased propellant capacity, making the production of bullet ammunition cases more efficient and cost-effective.
Implementation Method 1
The tube is formed of a flat strip which is shaped as a tube. The tube-shaped strip is closed by a weld achieved by welding means such as electron beam, laser or the like.
Implementation Method 2
The tube-shaped strip is closed by a weld achieved by welding means such as electron beam, laser or the like.
Implementation Method 3
The tube-shaped strip is closed by a weld achieved by welding means such as electron beam, laser or the like.
Implementation Method 4
the tube is shaped by mechanical and/or electromagnetic and/or pneumatic and/or hydraulic means
Implementation Method 5
the tube is shaped by mechanical and/or electromagnetic and/or pneumatic and/or hydraulic means
Implementation Method 6
the tube is shaped by mechanical and/or electromagnetic and/or pneumatic and/or hydraulic means
Implementation Method 7
the tube is shaped by mechanical and/or electromagnetic and/or pneumatic and/or hydraulic means
Data Source
AI summary
The invention relates to a method for producing cases, in which a case sleeve is formed from thin sheets, forming at least one element over an insert, a form or a cavity reproducing the conicity, the shoulder and the mouth that are characteristic of the case. The invention also relates to a product produced by the method, such as an ammunition case.